ammonia to nitrite
nitrite to nitrate
nitrate to free nitrogen
nitrogen to ammonia
C. nitrate to free nitrogen
All bacteria are autotrophic
All bacteria are heterotrophic
All bacteria are photosynthetic
Most of the bacteria are heterotrophic but some are autotrophic
Some bacteria are parasitic
Food poisoning is caused by products of putrefying bacteria
Bacteria reproduce by cell division, as often as once every twenty minutes
Bacteria manufacture food by help of chloroplasts
Robert Koch
Louis Pasteur
A.V. Leeuwenhoeck
Robert Hooke
Escherichia coli
Clostridium botulinum
Both (a) and (b)
None of these
nucleus
chromosomes
reduction division
syngamy
fission
endospores
cyst
all of these
Sewage disposal
Nitrogen fixation
Emulsification of fat
None of these
mitochondria
mesosomes
ribosomes
cell membrane
Water
Soil
Air
Human body
bacterioviridim
bacteriochlorophy11
chlorophyll
both (a) and (c)
fungi
algae
lichens
bacteria
Mesosomes
Nucleoid
Chromatophores
Pili
DNA
RNA
Chromosome
None of these
all plants except fungi
all green plants except prokaryotes
all green plants except bacteria
all green plants except cyanobacteria
gram-positive bacteria
gram-negative bacteria
all bacteria
only some bacteria
Staphylococcus
Streptococcus
Azotobacter
None of these
Robert Koch
L. Pasteur
T. Boveri
F.Jacob
chitin
mucopeptidc
lignin
suberin
Rhizobiunt
Azotobacter
Clostridium
Rhodospirilium
Bacillus subtilis
Rhizobiunt
E. coli
None of these
tanning of leather
flavouring of tea leaves
curdling of milk
none of these
high temperature
moderately high temperature
moderate temperate
low temperature
fertile soil
water
human intestine
all of these
fats
proteins
starch
oils
Nitrifying bacteria
Nitrogen fixing bacteria
Denitrifying bacteria
Putrefying bacteria
produce spores
have cell walls
cannot move
produce enzymes
atrichous
lophotrichous
amphitrichous
peritrichous
sexduction
transduction
conjugation
transformation
Bacillus coli
Streptococcus spp.
Pasteurella pestis
Clostridium tetani
ammonia to nitrite
nitrite to nitrate
nitrate to free nitrogen
nitrogen to ammonia